<template>
    <div class="icons">
         <swiper :options="swiperOption" >
             <swiper-slide v-for="( page,index) of pages" :key="index">
                <div class="icon" v-for="item of page" :key="item.id">
                    <div class='icon-img'>
                        <img class="icon-img-content" :src="item.imgUrl" >
                    </div>
                    <p class="icon-desc">{{item.desc}}</p>
                </div>
             </swiper-slide>
         </swiper>
    </div>
</template>

<script>
export default {
    name:'HomeIcons',
    props:{
        iconList:Array
    },
    data () {
        return {
            swiperOption:{
                autoplay:false
            }
        }
    },
    //计算属性 自带缓存
    computed :{
        pages () {
            const pages = []
            this.iconList.forEach((item,index) => {
                const page = Math.floor(index/8)  //向下取整
                if(!pages[page]){                  //如果不存在
                    pages[page] = []
                }
                pages[page].push(item) //将一维数组拆成二维数组
            })
            return pages
        }

    }
}
</script>

<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    @import '~styles/mixins.styl'
    .icons >>> .swiper-container
         height 0
         padding-bottom 50%
    .icons
        margin-top .2rem
        .icon
            position relative
            overflow hidden
            float left
            width 25%
            height 0
            padding-bottom 25%

            .icon-img
                position absolute
                top 0
                left 0
                right 0
                bottom .44rem
                box-sizing border-box
                border .1rem

                .icon-img-content
                    display block
                    margin 0 auto
                    height 100%
            .icon-desc
                position absolute
                bottom  0
                left 0
                right 0
                height .44rem
                line-height .44rem
                color $darkTextCorlor
                text-align center
                ellipsis()



</style>
